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Diodes Incorporated BAT46W-7-F
- Part No.:
- BAT46W-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- SOD-123
- Datasheet:
-
BAT46W-7-F.pdf
- Description:
- DIODE SCHOTTKY 100V 150MA SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:19,475
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Product details
Overview
BAT46W-7-F from Diodes Incorporated is a surface-mount Schottky barrier diode optimized for polarity protection, flyback energy recirculation, and high-speed switching in low-power DC circuits. It delivers 100 V peak reverse voltage, 150 mA continuous forward current, 1.0 V max forward voltage at 250 mA, <2.0 µA reverse leakage at 75 V, and operates from –55 °C to +125 °C in SOD123 package.
For engineers reviewing the BAT46W-7-F datasheet, BAT46W-7-F pinout, BAT46W-7-F application, or BAT46W-7-F equivalent, key selection criteria include low VF for efficiency-critical 3.3 V/5 V rail protection, high VRWM for industrial input stage robustness, thermal performance on FR-4 PCBs, and RoHS-compliant lead-free termination compatibility with reflow processes.
Technical Context
This Schottky diode uses guard ring construction to suppress transient-induced junction breakdown and improve ESD resilience in unregulated power inputs. Its low forward voltage drop stems from a platinum-silicide (PtSi) or similar low-barrier metal–semiconductor contact, enabling efficient clamping without significant conduction loss.
The device exhibits 20 pF total capacitance at 0 V reverse bias and 12 pF at 1 V, supporting fast switching in signal path isolation and low-energy snubbing applications. Thermal resistance of 420 °C/W (FR-4) limits power dissipation to 200 mW at ambient, requiring careful layout for sustained 150 mA operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 100 V - blocks up to 100 V DC reverse voltage, suitable for 48 V system inputs with margin |
| IF Continuous | 150 mA - supports sustained current in USB-powered peripherals and sensor interface rails |
| VF Max @ 250 mA | 1.00 V - ensures minimal voltage drop in polarity protection paths, preserving headroom |
| IR Max @ 75 V | 2.0 µA - guarantees low leakage in battery-backed circuits and high-impedance monitoring nodes |
| CT @ 0 V | 20 pF - enables use in <10 MHz signal routing without excessive capacitive loading |
| RθJA (FR-4) | 420 °C/W - defines thermal derating: max 150 mA only below +75 °C ambient with standard pad layout |
| TJ Range | –55 °C to +125 °C - qualified for extended industrial and automotive under-hood environments |
Pinout & Package
Package: SOD123 - surface-mount plastic case with cathode band marking, 0.01 g mass, UL 94V-0 rated, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry | Connected to positive supply or switched node; must be routed with low-inductance trace for flyback suppression |
| Cathode | Forward current exit / reverse blocking terminal | Marked by band; ties to ground or return path; serves as clamp reference in protection circuits |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring construction | Suppresses edge breakdown during voltage transients, improving reliability in noisy 12 V/24 V systems |
| Low VF at low IF | 0.25 V @ 0.1 mA enables effective reverse-polarity detection in always-on microcontroller reset circuits |
| Lead-free & RoHS 3 compliant | Fully compliant with EU Directive 2015/863/EU; matte tin plating ensures solderability and intermetallic stability |
| Halogen- and antimony-free | Meets "Green" definition (<900 ppm Br, <900 ppm Cl, <1000 ppm Sb), supporting eco-design requirements |
Applications
| USB Power Input Protection | Industrial Sensor Signal Clamping |
|---|---|
Use Scenario: Preventing damage from reversed USB cable insertion in portable test equipment. IC Role / Device Role / Timing Role: Polarity protection diode placed between USB VBUS and downstream LDO input. Use Value: 1.0 V VF preserves >4.0 V at LDO input under 500 mA load, avoiding brownout during hot-plug events. | Use Scenario: Limiting analog sensor output voltage excursions beyond ADC input range in factory automation nodes. IC Role / Device Role / Timing Role: Clamp diode tied between sensor output and 3.3 V rail, shunting overvoltage transients. Use Value: 20 pF capacitance avoids signal distortion at 10 kHz sensor bandwidth; 100 V VRWM accommodates 24 V field wiring surges. |
| DC-DC Converter Flyback Snubber | Microcontroller Reset Line Protection |
Use Scenario: Recirculating inductive kickback from solenoid drivers in PLC output modules. IC Role / Device Role / Timing Role: Freewheeling diode across 24 V coil, conducting during MOSFET off-time. Use Value: 350 mA IFRM rating handles repetitive 100 ms pulses; low VF minimizes heat rise in confined enclosures. | Use Scenario: Blocking reverse current from backup coin cell into main VCC during power failover in embedded controllers. IC Role / Device Role / Timing Role: Isolation diode in VCC-to-BAT path, preventing battery discharge when main supply is active. Use Value: 0.5 µA IR at 3 V ensures <1 µA standby drain, extending 10-year coin cell life in RTC applications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SBAT54LT1G | Lower VRWM (30 V), higher IF (200 mA), VF = 0.33 V @ 100 mA | Not suitable for 48 V input protection; better for 3.3 V logic-level clamping | Select when operating voltage ≤30 V and lower VF is prioritized over reverse blocking |
| 1N5817TR | Higher IF (1 A), larger DO-41 package, VF = 0.45 V @ 1 A, IR = 1 mA @ 20 V | Through-hole only; unsuitable for dense SMT layouts; higher leakage limits battery backup use | Choose for prototyping or high-current legacy designs where board space and leakage are secondary |
Compared with SBAT54LT1G and 1N5817TR, BAT46W-7-F uniquely balances 100 V blocking, SOD123 footprint, sub-2 µA leakage, and full RoHS 3 compliance-making it optimal for space-constrained industrial and USB-powered devices requiring long-term reliability.
Availability
BAT46W-7-F is available at Aetrix Electronics and suitable for USB power input protection, industrial sensor signal clamping, DC-DC converter flyback snubbing, and microcontroller reset line protection requiring stable component supply across production lifecycles.
Supply support for BAT46W-7-F includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design and manufacturing operations across Asia and the Americas.
The BAT46W belongs to Diodes' general-purpose Schottky diode product line, engineered for cost-sensitive, high-reliability applications in industrial controls, consumer electronics, and power management subsystems.
FAQ
What is the maximum junction temperature for BAT46W-7-F?
The absolute maximum junction temperature is +125 °C, with continuous operation permitted from –55 °C to +125 °C. Derating begins above +25 °C ambient per Figure 4; at +75 °C ambient, maximum continuous forward current drops to approximately 90 mA on FR-4 board.
Is BAT46W-7-F suitable for automotive applications?
The BAT46W-7-F is not AEC-Q200 qualified; however, an automotive-grade variant BAT46WQ is available separately with full qualification for passenger compartment applications. BAT46W-7-F may be used in non-safety-critical automotive accessories if validated per customer requirements.
Does BAT46W-7-F have a specified reverse recovery time?
No-Schottky diodes like BAT46W-7-F are majority-carrier devices and do not exhibit reverse recovery time (trr). Their switching speed is limited only by junction capacitance (20 pF at 0 V) and circuit inductance, enabling nanosecond-scale turn-off in properly laid-out PCBs.
What is the cathode marking method on BAT46W-7-F?
The cathode is marked by a visible band printed on the body of the SOD123 package. Per datasheet top view, the band aligns with the cathode terminal; polarity must be verified using multimeter diode test before placement, as orientation errors cause functional failure in protection circuits.
BAT46W-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 100 V
- Current - Average Rectified (Io):
- 150mA
- Voltage - Forward (Vf) (Max) @ If:
- 450 mV @ 10 mA
- Speed:
- Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 2 µA @ 75 V
- Capacitance @ Vr, F:
- 20pF @ 0V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
- Operating Temperature - Junction:
- -55°C ~ 125°C
BAT46W-7-F FAQ
1.How can I place an order for BAT46W-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BAT46W-7-F on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for BAT46W-7-F reliable?
The price and inventory of BAT46W-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAT46W-7-F is usually 5 days.
3.What payment methods are accepted for BAT46W-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAT46W-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAT46W-7-F?
BAT46W-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAT46W-7-F order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for BAT46W-7-F?
For technical support, including BAT46W-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAT46W-7-F requirements.
6.How does Aetrix verify that BAT46W-7-F is sourced from the original manufacturer or authorized distributors?
All BAT46W-7-F products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that BAT46W-7-F meets industry standards.
7.What is the process for return or replacement of BAT46W-7-F?
All BAT46W-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BAT46W-7-F, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The BAT46W-7-F part is unused and in its original packaging.
Return procedure for BAT46W-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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